A device set at a 42° angle launches a projectile 85 meters. What was the initial velocity? Use g = -9.81 m/sec². (Answer in m/sec with a precision of 0.00 - do not include units in your answer) *

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.